[INFO] updating cached repository https://github.com/BarlowDu/rust-lang
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3263b548bf23e2354feead422490f223480ffac7
[INFO] testing BarlowDu/rust-lang against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FBarlowDu%2Frust-lang" "work/builds/worker-8/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BarlowDu/rust-lang on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/BarlowDu/rust-lang
[INFO] finished tweaking git repo https://github.com/BarlowDu/rust-lang
[INFO] tweaked toml for git repo https://github.com/BarlowDu/rust-lang written to work/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/BarlowDu/rust-lang already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 92eaaa0f998c5966c0d1ab15930daad2359dc6faa30feb6012bd7f5be04fe6a4
[INFO] running `"docker" "start" "-a" "92eaaa0f998c5966c0d1ab15930daad2359dc6faa30feb6012bd7f5be04fe6a4"`
[INFO] [stderr]    Compiling rust-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/module/ienum.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Ok(t)=>println!("result match t"),
[INFO] [stderr]    |            ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/module/ienum.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Err(e)=>println!("result match none")
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/module/ienum.rs:33:14
[INFO] [stderr]    |
[INFO] [stderr] 33 |         Some(t)=>println!("option match t"),
[INFO] [stderr]    |              ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/module/iborrow.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut s=String::from("rust language");
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]   --> src/module/ilifetime.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     id:i32,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]   --> src/module/ilifetime.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     name:&'a str
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "92eaaa0f998c5966c0d1ab15930daad2359dc6faa30feb6012bd7f5be04fe6a4"`
[INFO] running `"docker" "rm" "-f" "92eaaa0f998c5966c0d1ab15930daad2359dc6faa30feb6012bd7f5be04fe6a4"`
[INFO] [stdout] 92eaaa0f998c5966c0d1ab15930daad2359dc6faa30feb6012bd7f5be04fe6a4
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] bb662eb852fa79b7a528452a18047b44f018a08566f10346e39f20fd934d65c3
[INFO] running `"docker" "start" "-a" "bb662eb852fa79b7a528452a18047b44f018a08566f10346e39f20fd934d65c3"`
[INFO] [stderr]    Compiling rust-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/module/ienum.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Ok(t)=>println!("result match t"),
[INFO] [stderr]    |            ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/module/ienum.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Err(e)=>println!("result match none")
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/module/ienum.rs:33:14
[INFO] [stderr]    |
[INFO] [stderr] 33 |         Some(t)=>println!("option match t"),
[INFO] [stderr]    |              ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/module/iborrow.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut s=String::from("rust language");
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]   --> src/module/ilifetime.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     id:i32,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]   --> src/module/ilifetime.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     name:&'a str
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `"docker" "inspect" "bb662eb852fa79b7a528452a18047b44f018a08566f10346e39f20fd934d65c3"`
[INFO] running `"docker" "rm" "-f" "bb662eb852fa79b7a528452a18047b44f018a08566f10346e39f20fd934d65c3"`
[INFO] [stdout] bb662eb852fa79b7a528452a18047b44f018a08566f10346e39f20fd934d65c3
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 539570f3cb11185ccccb6406c097d41cde5857b57bf69ab3c29228ba6c672ea2
[INFO] running `"docker" "start" "-a" "539570f3cb11185ccccb6406c097d41cde5857b57bf69ab3c29228ba6c672ea2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_lang-eb635b8a36d66e0c
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "539570f3cb11185ccccb6406c097d41cde5857b57bf69ab3c29228ba6c672ea2"`
[INFO] running `"docker" "rm" "-f" "539570f3cb11185ccccb6406c097d41cde5857b57bf69ab3c29228ba6c672ea2"`
[INFO] [stdout] 539570f3cb11185ccccb6406c097d41cde5857b57bf69ab3c29228ba6c672ea2